After McKenna & Bell, 1997 and Thorington, Pitassy & Jansa, 2002 (fig. 8.), with recent species from Nowak, 1991

<==o Pteromyinae Brandt, 1855 [taxonomic history] (flying (gliding) squirrels; liitävät oravat)
   |--+--o "Trogopterus -group"
   |  |  |--o Aeromys Robinson & Kloss, 1915 ()?
   |  |  |  |-- A. tephromelas (mustaliitoorava)
   |  |  |  `?- A. thomasi (thomas' flying squirrel)
   |  |  `--+-- Pteromyscus pulverulentus Thomas, 1908 (smoky flying squirrel)
   |  |     `--+-- Belomys pearsonii Thomas, 1908; U.Plioc.-R. As. (karvajalkaliito-orava)
   |  |        `-- Trogopterus xanthipes Heude, 1898; L.-M.Pleist-R. As. (poimuhammasliitoorava)
   |  `--o "Petaurista -group"
   |     |--+-- Eupetaurus cinereus Thomas, 1888 (Woolly flying squirrel; villaliitoorava)
   |     |  `--o Pteromys G. Guvier, 1800 [†Sciuropterus F. Guvier, 1825] U.Plioc.-R. As., R. Eu. (euraasian liito-oravat)
   |     |     |-- †P. jamesi [Sciuropterus jamesi]
   |     |     |-- †P. minimus [Sciuropterus minimus]
   |     |     |-- P. volans (liito-orava)
   |     |     `-- P. momonga (japaninliito-orava)
   |     `--+-- Aeretes melanopterus G.M. Allen, 1940; L.Pleist.-R. As. (kiinanliito-orava)
   |        `--o Petaurista Link, 1795 [Petauristus Fischer de Waldheim, 1814; incl? Galeolemur Lesson, 1840)] L.Pleist.-R. As. (Taguan)
   |           |?- P. philippensis (south Indian giant flying squirrel)
   |           |?- P. xanthotis (yellow-eared giant flying squirrel)
   |           |-- P. elegans (täpläjättiläisliito-orava)
   |           |-- P. petaurista (jättiläisliitoorava)
   |           |-- P. alborufus (red and white giant flying squirrel)
   |           |-- P. magnificus (hodgson's giant flying squirrel)
   |           |-- P. nobilis (noble giant flying squirrel)
   |           `-- P. leucogenys (japaninjättiläisliito-orava)
   `--+--o "Hylopetes-Petinomys -group"
      |  |--o Petinomys Thomas, 1908 U.Mioc.-R- As. U.Mioc.L.Plioc. Eu. ()?
      |  |  |?- P. lugens ()?
      |  |  |?- P. sagitta (javan flying squirrel)
      |  |  |-- P. setosus (whitebellied dwarf flying squirrel)
      |  |  |-- P. fuscocapillus (intianpikkuliito-orava)
      |  |  |-- P. hageni (hagen's flying squirrel)
      |  |  |-- P. vordermanni (vordermann's flying squirrel)
      |  |  |-- P. bartelsi [Hylopetes bartelsi] (bartels' flying squirrel)
      |  |  |-- P. genibarbis (whiskered flying squirrel)
      |  |  `-- P. crinitus (philippines flying squirrel)
      |  `--o Hylopetes Thomas, 1908 [†Pliopetes Kretzoi, 1959] U.Mioc.-R. As., L.Plioc. Eu. (pikkuliito-oravat)
      |     |?- H. winstoni (Winston Churchill's flying squirrel)
      |     |-- H. spadiceus (punaposkiliito-orava)
      |     |-- H. lepidus [incl. H. spadiceus] (harmaaposkiliito-orava)
      |     |-- H. electilis ()?
      |     |-- H. phayrei (kiinanpikkuliito-orava)
      |     |-- H. alboniger (particolored pygmy flying squirrel)
      |     |-- H. nigripes (palawan pygmy flying squirrel)
      |     `-- H. mindanensis ()?
      `--o "Glaucomys -group"
         |--o Iomys Thomas, 1908 ()?
         |  |-- I. horsfieldii (horsfield's flying squirrel)
         |  `?- I. sipora [Hylopetes sipora] (mentawi Isl. flying squirrel)
         `--+--o Petaurillus Thomas, 1908 ()?
            |  |-- P. hosei (hosenkääpiöliito-orava)
            |  |-- P. emiliae (kääpiöliito-orava)
            |  `-- P. kinlochii (selangor dwarf flying squirrel)
            `--+--o Eoglaucomys Howell, 1915 (himalajanpikkuliito-oravat)
               |  |-- E. fimbriatus (kashmir pygmy flying squirrel)
               |  `-- ?E. baberi (afghan pygmy flying squirrel)
               `--o Glaucomys Thomas, 1908; M.Pleist.-R. NA. (American flying squirrel; amerikanliito-oravat)
                  |--o G. volans (etelänliito-orava)
                  |  `?- G. v. volans ()?
                  `--o G. sabrinus (amerikanliito-orava)
                     |-- G. s. fuscus ()?
                     `-- G. s. coloratus ()?

Taxon not treated by Thorington, Pitassy & Jansa, 2002:

Oligopetes Heissig, 1979; L.Olig. Eu.
    †Petauristodon Engesser, 1979 [†Sciuropterus] Mioc. NA.
        †P. minutus [†Sciuropterus minimus; †Pteromys minimus]
        †P. jamesi [†Sciuropterus jamesi; †Pteromys jamesi]
        †P. mathewsiP. uphamiP. pattersoni Pratt & Morgan, 1989
    †Miopetaurista Kretzoi, 1962 [Cryptopterus Mein, 1970] M.Mioc. As., U.Mioc.-L.Plioc. Eu., U.Plioc. NA.
    †Cryptopterus Mein, 1970 [= Miopetaurista Kretzoi, 1962; McKenna & Bell, 1997]
        †C. webbiC. labbiAliveria de Bruijn, van der Maulen & Katsikatsos, 1980; L.Mioc. Eu.
    †Shuanggouia Qiu & Liu, 1986; M.Mioc. As.
    †Blackia Mein, 1970; L.Mioc.-U.Plioc. Eu., M.Mioc. NA.
        †B. miocaenicaForsythia Mein, 1970; M.Mioc. Eu.
    †Albanensia Daxner-Hock & Mein, 1975; M.-U.Mioc. As. Eu.
    †Meinia Qiu, 1981; M.Mioc. As.
    †Pliopetaurista Kretzoi, 1962; U.Mioc. As., U.Mioc.-L.Pleist. Eu.
    †Pliosciuropterus Sulimski, 1964
    †ParapetauristaPetauria Dehm, 1962; M.Pleist. Eu.
    Biswamoyopterus biswasi Saha, 1981 (namdapha flying squirrel)
    Olisthomys Carter, 1942 ()? [=> sg. Petaurista?]

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